'data.frame': 73500 obs. of 39 variables:
$ nct_id : Factor w/ 14334 levels "NCT00002495",..: 2835 2835 1608 1608 3090 3090 3090 12902 12902 12902 ...
$ start_date : Date, format: "2013-04-30" "2013-04-30" ...
$ completion_date : Date, format: "2014-09-30" "2014-09-30" ...
$ study_type : Factor w/ 4 levels "Expanded Access",..: 2 2 2 2 2 2 2 2 2 2 ...
$ acronym : chr NA NA NA NA ...
$ baseline_population : chr NA NA NA NA ...
$ brief_title : chr "Impact of SBI, a Medical Food, on Nutritional Status in Patients With HIV-associated Enteropathy" "Impact of SBI, a Medical Food, on Nutritional Status in Patients With HIV-associated Enteropathy" "Extension Study for Patients Who Have Participated in a BMN 701 Study" "Extension Study for Patients Who Have Participated in a BMN 701 Study" ...
$ official_title : chr "Randomized, Double-blind, Placebo-controlled, Multicenter, Clinical Study Evaluating the Impact of Serum-derive"| __truncated__ "Randomized, Double-blind, Placebo-controlled, Multicenter, Clinical Study Evaluating the Impact of Serum-derive"| __truncated__ "A Long-Term Study for Extended BMN 701 Treatment of Patients With Pompe Disease Who Have Participated in a BMN 701 Study" "A Long-Term Study for Extended BMN 701 Treatment of Patients With Pompe Disease Who Have Participated in a BMN 701 Study" ...
$ overall_status : Factor w/ 11 levels "Active, not recruiting",..: 3 3 9 9 3 3 3 3 3 3 ...
$ phase : Factor w/ 8 levels "Early Phase 1",..: 2 2 5 5 5 5 5 5 5 5 ...
$ enrollment : int 103 103 21 21 64 64 64 458 458 458 ...
$ enrollment_type : Factor w/ 2 levels "Actual","Anticipated": 1 1 1 1 1 1 1 1 1 1 ...
$ source : Factor w/ 2739 levels "1800 Contacts, Inc.",..: 868 868 404 404 2209 2209 2209 1930 1930 1930 ...
$ number_of_arms : Factor w/ 26 levels "1","2","3","4",..: 3 3 3 3 2 2 2 5 5 5 ...
$ why_stopped : chr NA NA "The study was terminated because BioMarin decided to end the overall development program based on competing cor"| __truncated__ "The study was terminated because BioMarin decided to end the overall development program based on competing cor"| __truncated__ ...
$ has_expanded_access : logi FALSE FALSE FALSE FALSE FALSE FALSE ...
$ is_fda_regulated_drug : logi FALSE FALSE FALSE FALSE FALSE FALSE ...
$ is_fda_regulated_device : logi FALSE FALSE FALSE FALSE FALSE FALSE ...
$ site : Factor w/ 13349 levels "\"National Ophthalmic Research Institute Retina Consultants of Southwest Florida\"",..: 11675 NA 12133 11077 9522 10878 7297 5313 5313 9413 ...
$ city : Factor w/ 349 levels "Altamonte","Altamonte Springs",..: 87 188 97 318 182 182 291 18 18 77 ...
$ state : Factor w/ 1 level "Florida": 1 1 1 1 1 1 1 1 1 1 ...
$ zip : Factor w/ 1221 levels "00000","033401",..: 664 600 223 832 420 521 909 752 752 77 ...
$ country : Factor w/ 1 level "United States": 1 1 1 1 1 1 1 1 1 1 ...
$ number_of_facilities : int 10 10 12 12 13 13 13 63 63 63 ...
$ actual_duration : int 9 9 61 61 4 4 4 8 8 8 ...
$ were_results_reported : logi TRUE TRUE TRUE TRUE FALSE FALSE ...
$ has_us_facility : logi TRUE TRUE TRUE TRUE TRUE TRUE ...
$ has_single_facility : logi FALSE FALSE FALSE FALSE FALSE FALSE ...
$ minimum_age_num : int 18 18 13 13 18 18 18 18 18 18 ...
$ maximum_age_num : int NA NA NA NA 75 75 75 NA NA NA ...
$ minimum_age_unit : Factor w/ 12 levels "Day","Days","Hour",..: 12 12 12 12 12 12 12 12 12 12 ...
$ maximum_age_unit : Factor w/ 7 levels "Days","Hours",..: NA NA NA NA 7 7 7 NA NA NA ...
$ number_of_primary_outcomes_to_measure : int 1 1 3 3 1 1 1 1 1 1 ...
$ number_of_secondary_outcomes_to_measure: int 0 0 9 9 2 2 2 6 6 6 ...
$ number_of_other_outcomes_to_measure : int 5 5 0 0 0 0 0 0 0 0 ...
$ condition_name : Factor w/ 8501 levels "2019 Novel Coronavirus Disease",..: 3547 3547 5906 5906 2288 2288 2288 5148 3317 5148 ...
$ condition_name_lower_case : Factor w/ 8409 levels "2019 novel coronavirus disease",..: 3509 3509 5839 5839 2262 2262 2262 5097 3281 5097 ...
$ duration_months : num 17 17 60.81 60.81 8.03 ...
$ duration_years : num 1.419 1.419 5.068 5.068 0.666 ...